Chip paper containing thermally expandable particles

Abstract

The present invention relates to a tipping paper (1) that can be provided with at least one protrusion (10) using the effect of heat, said tipping paper comprising thermally expandable particles provided within the substrate of the tipping paper (1) or in the form of an imprint or coating (2), said imprint or coating (2) being provided on the substrate of the tipping paper (1).

Description

[Technical Field]

[0001] This invention relates to mouthpiece lining paper having thermally expandable particles.

[0002] The present invention relates particularly to mouthpiece lining paper for cigarettes and non-combustible heated consumable articles, or more generally to mouthpieces for aerosol-generating consumable articles. [Background technology]

[0003] Often abbreviated as "tip paper" or simply "tip," mouthpiece lining paper is the part of an aerosol-generating consumable that comes into contact with a person's lips when smoking a filtered cigarette or when heating a non-combustible heated consumable. The mouthpiece lining paper surrounds the filter portion and typically protrudes slightly into the longitudinal region of the tobacco rod or aerosol-generating substrate in the longitudinal direction of the consumable, where it surrounds the packaging material of the tobacco paper or aerosol-generating substrate. The mouthpiece lining paper forms the outermost packaging material of the aerosol-generating consumable and, in contrast to tobacco paper, does not burn when the consumable is used.

[0004] Mouthpiece lining paper is, in most cases, actually paper, but it can also be a foil or composite material formed from several layers of different materials.

[0005] Mouthpiece lining paper often includes an imprint. For example, this imprint can be an imitation of cork. However, mouthpiece lining paper with a white area where the lips touch is also used.

[0006] U.S. Patent No. 9307789 teaches the application of a lacquer structure to mouthpiece lining paper. The structured application of lacquer requires a precisely functioning application apparatus. [Prior art documents] [Patent Documents]

[0007] [Patent Document 1] U.S. Patent No. 9307789 [Overview of the project]

[0008] The object of the present invention is to provide structured mouthpiece lining paper and an improved method for manufacturing structured mouthpiece lining paper.

[0009] To achieve this objective, the mouthpiece lining paper described in claim 1 is proposed.

[0010] The mouthpiece lining paper contains thermally expandable particles that can expand upon the action of heat to create a raised structure or at least raised areas.

[0011] In one embodiment, the thermally expandable particles are included in the base material of the mouthpiece lining paper.

[0012] The base material is preferably paper, particularly 30 to 60 g / m². 2 Particularly preferably 30 to 50 g / m 2 This is a so-called base paper with a basis weight of [amount].

[0013] Although less preferred, in addition to the base paper, the substrate may include foil formed particularly from cellulose hydrate. Again, less preferred, the substrate may consist of foil, particularly cellulose hydrate, or exist as a laminate of several foils. In these cases, thermally expandable particles may be included in the foil.

[0014] Preferably, the mouthpiece lining paper is actually paper, and the thermally expandable particles are included in the paper, in particular, in that they are encapsulated in the paper's fiber matrix during the papermaking process.

[0015] In the second embodiment, the thermally expandable particles are included in the printing or coating. The thermally expandable particles can be applied by a non-film-forming printing ink or a film-forming transparent lacquer or a film-forming colored lacquer.

[0016] The particles are preferably expanded by the action of heat when the web of the mouthpiece lining paper is conveyed along the hot cylinder or the hot embossing roller of the hot stamping machine.

[0017] In the first embodiment, only heating is performed, and as a result, in contrast to the conventional use of a hot stamping machine, the hot stamping foil is not transferred.

[0018] In the second embodiment, the hot stamping foil is transferred in addition to or together with the heating. As a result, the hot stamping foil is present on the raised area formed by the expanded particles. The foil optically emphasizes the raised area.

[0019] The expansion can also be carried out using other machines that enable targeted or structured heating of the web of the mouthpiece lining paper, such as a thermal printer, particularly a thermal braille printer.

[0020] In another embodiment, the heating is performed on the mouthpiece lining paper when the mouthpiece lining paper is already present on the aerosol-generating consumer product. The mouthpiece lining paper forms the outer layer of the consumer article. The heating is preferably performed before the consumer article is packaged for sale. In another embodiment, the heating is performed when the consumer article is used by the consumer, for example, by heating the consumer article in a non-combustion heating device.

[0021] In one embodiment, a printing or coating containing thermally expandable particles is applied to the continuous surface of the mouthpiece lining paper, and the subsequent structure is formed by heating with a structured heating surface.

[0022] In one embodiment, a print or coating having thermally expandable particles is applied to a mouthpiece lining paper in a structured manner. In this case, the subsequent structure can also be formed by heating with a flat heating surface or by heating an aerosol-generating consumer product provided with the mouthpiece lining paper.

[0023] In one embodiment, a print or coating is provided in a continuous region, which extends in the form of a band along the entire side surface of the mouthpiece lining paper, and an annular region having thermally expandable particles is present on the aerosol-generating product.

[0024] The expansion is preferably carried out on a continuously moving band of the mouthpiece lining paper provided with a thermally expanding structure between two rollers (an embossing roller and a counter-pressure roller) by transferring the embossing structure of the embossing roller to the mouthpiece lining paper by heat and pressure.

[0025] In one embodiment, the expandable particles are applied by a lacquer and are thus included in the lacquer layer on the mouthpiece lining paper.

[0026] The term lacquer includes all kinds of film-forming substances.

[0027] In a first embodiment, the lacquer is a transparent lacquer that cures to form a transparent lacquer layer.

[0028] The transparent lacquer is particularly preferably a nitrocellulose lacquer.

[0029] The transparent lacquer preferably comprises nitrocellulose or ethylcellulose, thermally expandable particles, and one or more solvents selected from the group of solvents including ethanol, ethyl acetate, and isopropanol. The solvents mentioned can be present in the form of an aqueous solution such that the paint comprises thermally expandable particles, nitrocellulose or ethylcellulose, an organic solvent, and water. The transparent lacquer can also comprise effect pigments.

[0030] The transparent lacquer composition is preferably applied in an amount of from 0.25 g / m 2 to 2 g / m 2 and particularly preferably from 0.5 g / m 2 to 1 g / m 2 .

[0031] In a second embodiment, the lacquer is a colored lacquer that cures to form a colored lacquer layer.

[0032] The colored lacquer comprises nitrocellulose or ethylcellulose, thermally expandable particles, and a colored pigment, and one or more solvents selected from the group of solvents including ethanol, ethyl acetate, and isopropanol. The solvents mentioned can be present in the form of an aqueous solution such that the colored lacquer comprises nitrocellulose or ethylcellulose, a colored pigment, and an organic solvent and water. The colored lacquer can also contain additives and / or fillers.

[0033] The colored lacquer can also comprise effect pigments.

[0034] The colored lacquer composition is preferably applied in an amount of from 0.25 g / m 2 to 8 g / m 2 and particularly preferably from 1 g / m 2 to 4 g / m 2 .

[0035] The colored lacquer is applied to the surface in the form of a single-color coating. The coating can exist as spaced-apart bands or as multiple bands. The colored lacquer composition preferably has a viscosity of 8 to 16 seconds, particularly 10 to 14 seconds. The viscosity value is determined using a flow cup test with a cup diameter of 4 mm (ISO cup 4 mm according to EN ISO 2431 version 1993-02-15).

[0036] Clear or colored lacquer is preferably applied by gravure printing, particularly by web gravure printing.

[0037] The lacquer layer is preferably applied in one layer, more preferably in two layers.

[0038] It is preferable to apply the lacquer directly to the base paper of the mouthpiece lining paper.

[0039] The base paper is preferably 30 to 60 g / m² 2 Particularly preferably 30 to 50 g / m 2 It has a basis weight of [amount].

[0040] The lacquer is preferably applied to the untreated surface of the base paper. Therefore, the base paper is preferably not coated.

[0041] In one embodiment, the coating is performed in the form of one or more bands of colored lacquer present on a white base paper. The coated mouthpiece lining paper preferably has at least one white region and one region having a colored layer, which preferably extend in the form of bands circumferentially to the aerosol-generating consumable article.

[0042] In one embodiment, the expandable particles are applied by aqueous printing ink and are therefore included in printing onto mouthpiece lining paper.

[0043] The water-based printing ink preferably has a viscosity of 15 to 60 seconds, particularly preferably 16 to 35 seconds, and especially 16 to 21 seconds.

[0044] The water-based printing ink is preferably 0.25 g / m². 2 From 8g / m 2 , particularly preferably 1 g / m 2 From 4g / m 2 It is applied in terms of quantity.

[0045] The mouthpiece lining paper preferably includes a color imprint that mimics the appearance of cork.

[0046] As already explained, in one embodiment, the color imprint is a colored lacquer layer.

[0047] In a second embodiment, the color imprint may be a non-film-forming coating or print in the form of, for example, a colored ink or printing ink. As described above, a clear lacquer may be applied over the colored coating. The clear lacquer layer is preferably present continuously across the entire mouthpiece lining paper or aligned with one or more band-shaped colored layers. Expandable particles may be included in the colored ink or printing ink and / or the clear lacquer layer.

[0048] The application of colored inks and / or lacquers is carried out on a continuously moving material web of the base paper. After application, the material web is preferably moved through a drying apparatus.

[0049] A heating dryer, particularly a hot air dryer and / or a heating roller, is preferably used as the drying apparatus. Less preferably, an infrared emitter may be used as an additional or alternative.

[0050] Drying is preferably carried out at a temperature below the particle expansion temperature.

[0051] If expansive particles are included in a printed or lacquered layer applied to a limited area or in a structured manner, drying can also cause cracking above the expansion temperature, resulting in the formation of bulges during drying.

[0052] After the lacquer layer dries, the material web is wound onto a bobbin or fed directly into an embossing machine or hot foil machine to produce a thermally expanded structure. After the structure is produced, the material web is wound onto a bobbin or the structured material web is fed into a cigarette manufacturing machine.

[0053] Mouthpiece lining paper can be fitted with foil elements, particularly metal foil elements, from a hot foil machine. These are applied especially as thin bands or logos.

[0054] Hot stamping is performed according to known methods, in which foil elements are applied to mouthpiece lining paper by pressure and heat from a transfer element. The area of ​​the mouthpiece lining paper on which the foil elements are provided is heated more strongly during the hot stamping process, as a result of the expansion of thermally expandable particles located beneath the foil elements.

[0055] The present invention also relates to equipment for manufacturing mouthpiece lining paper, A machine for printing or coating mouthpiece lining paper with printing ink or lacquer, It includes a machine for hot stamping mouthpiece lining paper.

[0056] If necessary, a machine for coating the mouthpiece lining paper with ink can be positioned upstream of a machine for coating the mouthpiece lining paper with lacquer, or the machine for coating the mouthpiece lining paper with lacquer can also be equipped with means for coating with additional printing inks.

[0057] If necessary, there may be a machine for printing mouthpiece lining paper, which can also print multi-colored logos on the mouthpiece lining paper.

[0058] The mouthpiece lining paper is moved as a band through each machine, and the application of printing ink or lacquer and hot stamping are preferably carried out continuously in the longitudinal direction of the band.

[0059] In an advantageous embodiment, the band of mouthpiece lining paper is not transferred from one machine to the next, but rather wound onto a bobbin after each machine and then transferred to the next machine.

[0060] A band moving through a machine for coating mouthpiece lining paper with printing ink or lacquer consists of several mouthpiece lining papers aligned laterally with respect to the direction of movement, and the orientation of the mouthpiece lining papers across the direction of movement, i.e., along the width of the band, is later aligned with the longitudinal direction of the consumable item.

[0061] A machine for printing or coating mouthpiece lining paper with printing ink or lacquer preferably includes a cutting device that cuts the band longitudinally after the printing ink or lacquer layer has been applied, resulting in at least two narrower bands of mouthpiece lining paper coated with printing ink or lacquer. Each of the narrower bands is wound onto a bobbin.

[0062] These bobbins with narrower bands are preferably supplied to the machine for hot stamping the mouthpiece lining paper.

[0063] Particularly suitable thermally expandable particles are expandable microspheres, which expand when exposed to heat to form hollow spheres with a larger volume. Expandable microspheres can contain gases or liquids; gases expand under the action of heat, or liquids evaporate as their volume increases. The deformation is irreversible and persists even after cooling.

[0064] The thermally expandable particles are preferably thermoplastic polymer particles or gel particles.

[0065] The particles are preferably expanded using contact technology. The raised structure on the high-temperature surface is transferred to the mouthpiece lining paper as a raised structure. This is in contrast to conventional embossing processes where the raised structure on the surface is transferred to the mouthpiece lining paper as depressions.

[0066] Particle expansion can also be performed non-contact, for example, by heating the subregion to be expanded with a laser beam.

[0067] The expandable particles preferably have an expansion temperature of 100 to 250°C.

[0068] The average particle size of the expandable particles in the unexpanded state is preferably 1 μm to 50 μm. When they expand, their diameters preferably increase by 5 to 15 times.

[0069] In addition to polymer-based hollow microspheres, inorganic particles such as expandable mica, expandable graphite, and perlite can be used.

[0070] In one embodiment, the mouthpiece lining paper is selectively heated by a laser beam. As a result, the mouthpiece lining paper can have a structured surface applied to the cigarette machine or finished cigarette by laser immediately after printing or coating, or before packaging. The laser can be used to form raised structures on areas of the mouthpiece lining paper containing thermally expandable particles, such as fine lines, logos, codes, QR codes®, or company symbols (e.g., emblem coatings, identification marks). The laser can be moved one row at a time across the surface of the mouthpiece lining paper, so that the laser beam subsequently strikes only the raised surfaces or is turned on only on the raised surfaces. The laser beam can also be moved across the surface of the mouthpiece lining paper along a predetermined path along two coordinates. When the laser beam is irradiated onto a continuously moving web of mouthpiece lining paper, the movement of the laser beam across the transport direction of the mouthpiece lining paper can be sufficient.

[0071] The path of the laser beam and / or the on / off pattern of the laser beam can be individually programmed so that different shaped ridges can be formed on the mouthpiece lining paper. In one embodiment, ridges of the mouthpiece lining paper that are adjacent to each other in the web direction can differ from each other in terms of their shape or position, or in terms of the meaning of any codes present. In one embodiment, ridges of the mouthpiece lining paper that are aligned laterally with respect to the web direction can differ from each other in terms of their shape or position, or in terms of the meaning of any codes present.

[0072] In another embodiment, the mouthpiece lining paper is provided with lacquer or water-based printing ink only in a limited area, and the heat-expandable particles are contained in the lacquer or printing ink. As a result, the expandable particles are present only in a limited area on the mouthpiece lining paper, and consequently, the mouthpiece lining paper has at least one area with expandable particles and at least one area without expandable particles. At least one of the areas may exist as a symbol, code, or pattern. The lacquer or water-based printing ink may be transparent, or it may be the background color, or it may be the color of the area of ​​the mouthpiece lining paper that does not have this lacquer or water-based printing ink. As a result, the area with expandable particles cannot be optically distinguished from the area without expandable particles. After heating, the area with expandable particles stands out as a relief from the other areas, so that heating alone makes the area tactile and, consequently, possibly visually distinguishable.

[0073] Heating may be performed before, during, or after use on the web material of the mouthpiece lining paper, on the cigarette device, or on the finished aerosol-generating consumable.

[0074] This embodiment makes it possible to implement a security feature that is initially undetectable and can be made detectable by heating, in order to detect counterfeit products that do not have this security feature. [Brief explanation of the drawing]

[0075] The present invention will be described below with reference to the drawings:

[0076] [Figure 1] This illustrates the application of an exemplary mouthpiece lining paper according to the present invention to a filtered cigarette. [Figure 2] This illustrates the application of the mouthpiece lining paper according to the present invention to non-combustible heated consumable articles. [Figure 3] This illustrates the application of an exemplary mouthpiece lining paper according to the present invention to a filtered cigarette. [Figure 4] This shows an exemplary mouthpiece lining paper according to the present invention. [Figure 5] This shows the generation of raised areas using a laser. [Figure 6] Another exemplary mouthpiece lining paper according to the present invention is shown. [Modes for carrying out the invention]

[0077] Figure 1 shows an exemplary structure of a filtered cigarette equipped with a mouthpiece lining paper 1 according to the present invention, which includes a lacquer layer or print 2. The base material of the mouthpiece lining paper 1 or the lacquer layer or print 2 contains thermally expandable particles.

[0078] Conventional filtered cigarettes further include tobacco paper 3 surrounding a rod 4 of aerosol-generating substrate, which is usually called the tobacco rod in the case of filtered cigarettes. Conventional filtered cigarettes further include filter paper 5 surrounding a filter 6. The mouthpiece lining paper 1 can also be provided in unfiltered cigarettes.

[0079] Figure 2 shows an exemplary structure of a non-combustible heated consumable article comprising a mouthpiece lining paper 1 according to the present invention, which comprises a lacquer layer or print 2. The substrate of the mouthpiece lining paper 1 or the lacquer layer or print 2 contains thermally expandable particles.

[0080] Conventional non-combustible heated consumables further comprise a rod 4 of an aerosol-generating substrate, a hollow section 7, a cooling section 8, and a filter 6. Each of these sections may or may not include its own packaging material.

[0081] Since the rod 4 of the non-combustible heating consumable is heated without burning the packaging material, the mouthpiece lining paper 1 can extend over the entire length of the non-combustible heating consumable. The mouthpiece lining paper 1 can be designed with multiple layers, for example, having an internal aluminum layer in the area of ​​the rod 4. In contrast to the illustrated version, the mouthpiece lining paper 1 extending only over a portion of the non-combustible heating consumable can also be attached to the non-combustible heating consumable, in which case additional packaging material may be present for the rod and other components 6, 7, 8 as needed.

[0082] Non-combustible heating consumables can be heated by an electronic device (non-combustible heating device), and non-combustible heating consumables having a rod 4 are first introduced into the device so that the mouthpiece lining paper 1 and the imprint or lacquer layer 2 are exposed for the user's lips. As shown in the figure, the printing or lacquer layer 2 is not present in the area where the rod 4 is located or in the area supplied to the device.

[0083] In another known embodiment of a non-combustion heating consuming article, the non-combustion heating consuming article has a heat source, particularly in the form of carbon, in front of the rod 4.

[0084] The print or lacquer layer 2 containing thermally expandable particles can be placed in the area of ​​the heat source or the area of ​​the rod 4, and as a result, if the imprint or lacquer layer 2 is present only in a limited area or in a structured manner, a raised structure is formed when the consumable item is used.

[0085] As shown in Figures 1 and 2, the printed or lacquered layer 2 extends only over a portion of the mouthpiece lining paper 1 and is positioned, for example, only at the rear end of the aerosol-generating consuming article facing outward from the rod 4.

[0086] The mouthpiece lining paper 1 may include perforations that can be present in areas where the printing or lacquer layer 2 is not provided, or that can penetrate the printing or lacquer layer 2 and the base paper.

[0087] In another embodiment, the mouthpiece lining paper 1 may have a printed or lacquered layer 2 across its entire surface, as shown in Figure 3.

[0088] As shown in Figures 2 to 4, the mouthpiece lining paper 1 may further comprise a foil element 9, which can be applied over the printed or lacquered layer 2, or to areas not covered by the printed or lacquered layer 2.

[0089] The printed or lacquered layer 2 can be a transparent lacquer layer, a colored lacquer layer, or a color imprint of non-film-forming printing ink.

[0090] In the case of a clear lacquer layer, this can be applied to a white base paper or to a base paper that has been color printed or color coated. A clear lacquer layer can cover a larger area than color printing or color coating.

[0091] In the case of a colored lacquer layer, the colored lacquer layer itself forms the colored coating or colored area of ​​the mouthpiece lining paper.

[0092] Figure 4 shows a top view of a strip of a single mouthpiece lining paper 1 comprising a base paper, a printed or lacquered layer 2, and three foil elements 9. The printed or lacquered layer 2 is indicated by a dotted line area.

[0093] Because the base paper of the mouthpiece lining paper 1 or the printed or lacquered layer 2 contains thermally expandable particles, a tactilely perceptible structure can be manufactured on the surface. Figures 1 to 4 show exemplary ridges 10 that can be manufactured within the scope of the present invention.

[0094] In the example shown in Figure 1, the thermally expandable particles are contained, for example, only in the base paper or substrate of the mouthpiece lining paper 1, and are in particular embedded therein. When a small area of ​​the mouthpiece lining paper 1 is heated, the thermally expandable particles expand within this small area, creating bulges 10 in the base paper or substrate of the mouthpiece lining paper 1. These bulges 10 can be present in areas of the mouthpiece lining paper 1 that do not have a printed or lacquer layer 2. These bulges 10 can also be present in areas of the mouthpiece lining paper 1 that have an imprint or lacquer layer 2, and the bulges 10 are formed beneath the imprint or lacquer layer 2.

[0095] In the example in Figure 2, the thermally expandable particles are contained in the base paper or mouthpiece lining paper 1 and the printed or lacquered layer 2. These bumps 10 can be present in areas of the mouthpiece lining paper 1 that do not have the printed or lacquered layer 2. These bumps 10 can also be present in areas of the mouthpiece lining paper 1 that have the imprinted or lacquered layer 2, with the bumps 10 being below and within the imprinted or lacquered layer 2. When the action of heat is applied over a small area, the expansion of the particles can be limited to the printed or lacquered layer 2, as indicated by the small bumps 10 on the underside of the consumer item.

[0096] Figure 2 also shows the band of foil element 9 applied to the mouthpiece lining paper 1 by hot stamping. As a result of the heat during hot stamping, the particles below the band of foil element 9 expand, thereby creating a ridge 10 that aligns with the band of foil element 9.

[0097] Figures 3 and 4 show that the thermally expandable particles are contained, for example, only in the printed or lacquered layer 2, and in particular are encapsulated within the printed or lacquered layer 2. In this case, heating the mouthpiece lining paper 1 causes the particles in the printed or lacquered layer 2 to expand, and as a result, the substrate, especially the base paper, does not have any bulges 10. Therefore, the foil elements 9 shown in Figure 4 in areas of the substrate where the printed or lacquered layer 2 is not provided do not generate bulges 10. As shown in Figures 3 and 4, bulges 10 can be present in the printed or lacquered layer 2 and can be formed by the action of localized heat, with or without the attachment of the foil elements 9. As already mentioned, the foil elements 9 can exist on the mouthpiece lining paper 1 in the form of bands, or as locally demarcated foil elements 9, for example, in the form of dots or logos, as also shown in Figure 4.

[0098] Figures 3 and 4 also show raised areas 10 of the printed or lacquered layer 2 that are present as dots and are not covered by the foil elements 9. The dots can be arranged to correspond to Braille characters. The dots or other shapes can also extend as a regular pattern across the entire surface of the printed or lacquered layer 2.

[0099] Naturally, in the embodiments shown in Figures 1 and 2, the base material or paper of the mouthpiece lining paper 1 may also have raised areas 10 or a regular pattern of Braille characters as raised areas 10.

[0100] As shown in Figure 5, a raised structure or at least one raised area 10 can be formed by heating a continuous region containing thermally expandable particles with a laser beam moved over this region. In the example in Figure 5, the lettering ABC is depicted as a raised structure by the laser beam. The thermally expandable particles can be present in the substrate or within the printed or lacquer layer 2. The example in Figure 5 also shows that the mouthpiece lining paper 1 can exist without colored printing, and that the thermally expandable particles are present in the base paper or within the colorless printed or transparent lacquer layer 2. This colorless printed or transparent lacquer layer 2 can be present across the entire surface of the mouthpiece lining paper 1 or in one or more partial regions. Depending on the energy of the laser beam, it may also be possible to cause a color change in the mouthpiece lining paper 1, resulting in the structure being conspicuous from the surrounding region, either tactilely or additionally in color.

[0101] Instead of a laser beam, the raised structure or at least one raised section 10 can be formed by hot stamping or by heating through an opening in the template.

[0102] As shown in Figure 6, a printed or lacquered layer 2 containing thermally expandable particles can be present only in limited areas on the mouthpiece lining paper 1. In the example in Figure 6, two areas or structures are printed or coated, each indicated as lettering A, B, C. By heating the mouthpiece lining paper 1 or each area, a raised structure or ridge 10 can be generated in both areas or only one of them. As shown in the figure, it is preferable that the areas with thermally expandable particles do not differ in color from the surrounding surface. This can be achieved by transparent printing or lacquering, or by using colored printing or lacquering, which is the background color or the color of the surrounding area. In the example in Figure 6, the dotted area represents a print that mimics cork. Therefore, the printed or lacquered layer 2 in this area can be either transparent or the color of the cork-mimicking print.

[0103] The mouthpiece lining paper 1, in the sense of the outermost packaging material of an aerosol-generating consumable article that does not burn during consumption, can be attached to the non-combustible heating consumable article so as to be present in the area of ​​the rod 4. The mouthpiece lining paper 1 preferably has an area having a printed or lacquered layer 2 containing thermally expandable particles, which is surrounded or interspersed with areas that do not contain thermally expandable particles, and this area having thermally expandable particles is heated by a non-combustible heating device during heating.

[0104] The example should be understood purely as descriptive. The mouthpiece lining paper 1 having ridges 10 formed by thermally expandable particles can exist on any type of aerosol-generating consumable article, for example, as packaging material for cigars or cigarillos, or as a sheet of packaging material for hand-rolled cigarettes.

[0105] The mouthpiece lining paper 1 should be placed on the aerosol-generating consumable such that the printed or lacquered layer 2 is located on the outside of the aerosol-generating consumable. If the printed or lacquered layer 2 is present only in a partial area, it can be placed facing outward from the rod 4 or in the area of ​​the rod 4 of the non-combustible heating consumable.

Claims

1. Mouthpiece lining paper (1) that can be provided with at least one ridge (10) by the action of heat, wherein the mouthpiece lining paper contains thermally expandable particles present in the substrate or printed or lacquered layer (2) of the mouthpiece lining paper (1), and the printed or lacquered layer (2) is disposed on the substrate of the mouthpiece lining paper (1).

2. The mouthpiece lining paper (1) according to claim 1, characterized in that the mouthpiece lining paper (1) comprises at least one ridge (10), the ridge (10) is formed by the thermally expandable particles, and the ridge is formed from the thermally expandable particles by heating the mouthpiece lining paper (1).

3. The mouthpiece lining paper (1) according to any one of claims 1 to 2, characterized in that the thermally expandable particles are present in the base material of the mouthpiece lining paper (1), and the base material is paper.

4. The mouthpiece lining paper (1) according to claim 1, characterized in that the thermally expandable particles are present within the printed or lacquered layer (2).

5. The mouthpiece lining paper (1) according to claim 4, characterized in that the printed or lacquered layer (2) containing the thermally expandable particles is present only in a limited area on the mouthpiece lining paper (1), such that the mouthpiece lining paper has at least one surface area in which thermally expandable particles are present and at least one surface area in which thermally expandable particles are not present.

6. The mouthpiece lining paper (1) according to claim 5, characterized in that at least one surface region having thermally expandable particles is optically identical to at least one surface region not having thermally expandable particles, and after exposure to heat, the region becomes distinguishable by the thermally expandable particles.

7. The mouthpiece lining paper (1) according to claim 1, characterized in that the printing or lacquer layer (2) is printing ink, a transparent lacquer layer, or a colored lacquer layer.

8. The mouthpiece lining paper (1) according to claim 1, characterized in that the foil element (9) is located above the at least one ridge (10).

9. A method for manufacturing a mouthpiece lining paper (1) having at least one ridge (10), characterized in that the mouthpiece lining paper (1), which contains thermally expandable particles in the substrate of the mouthpiece lining paper (1) or in the printed or lacquered layer (2) on the substrate, is brought into contact with a high-temperature surface or irradiated with a laser beam, and as a result the thermally expandable particles in the area of ​​the mouthpiece lining paper (1) that is in contact with the high-temperature surface or heated by the laser beam expand to form the ridge (10).

10. The method according to claim 9, characterized in that a continuous web of mouthpiece lining paper (1) is moved along an embossing roller having a high-temperature structured surface, and the embossed structure of the embossing roller is transferred to the mouthpiece lining paper (1) as raised areas.

11. The method according to claim 9, characterized in that a continuous web of mouthpiece lining paper (1) is moved through a hot stamping device, foil elements (9) are attached to the mouthpiece lining paper (1) by the hot stamping device, and thermally expandable particles of the mouthpiece lining paper (1) present in the region of the attachable foil elements (9) expand to form a ridge (10).

12. An aerosol-generating consumable article comprising a mouthpiece lining paper (1) as described in claim 1, characterized in that, after heating the mouthpiece lining paper (1), a ridge (10) exists on the outside of the consumable article within the heated area.

13. The aerosol-generating consumable article according to claim 12, characterized in that the raised area (10) is in the form of a symbol, structure, or code.

14. An apparatus for manufacturing a mouthpiece lining paper (1) as described in claim 1, comprising a machine for printing or coating the mouthpiece lining paper (1) and a machine for hot stamping the mouthpiece lining paper (1), wherein a band can be transported through each of the machines, and the band is configured laterally for a plurality of mouthpiece lining papers (1) for each aerosol generating consumption article.

Images